Hydroelectric Dams

2,099 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Russell Hampden	Low Hazard	30 ft	1905	Concrete	Massachusetts
Russell Mill Pond Plymouth	Low Hazard	25 ft	1898	Earth	Massachusetts
R. W. Matthews Trinity	High Hazard	150 ft	1962	Earth	California
Ryan Cascade	High Hazard	61 ft	1915	Gravity	Montana
Sabrina Inyo	High Hazard	70 ft	1908	Rockfill	California
Saddlebag Lake Mono	High Hazard	45 ft	1921	Rockfill	California
Safe Harbor Lancaster	Significant Hazard	75 ft	1930	Gravity	Pennsylvania
Saint Croix Falls Polk	High Hazard	60 ft	1905	Arch	Wisconsin
Salina Dike Mayes	High Hazard	45 ft	1964	Earth	Oklahoma
Salisbury Mills Dam Orange	Low Hazard	29 ft	1922	Concrete	New York
Salmon Creek City and Borough of Juneau	High Hazard	170 ft	1914	Arch	Alaska
Salt Springs Calaveras	High Hazard	328 ft	1931	Rockfill	California
Saluda Lexington	High Hazard	213 ft	1930	Earth	South Carolina
Saluda Lake Dam Greenville	High Hazard	54 ft	1905	—	South Carolina
Sam Rayburn Dam Jasper	High Hazard	120 ft	1965	Earth	Texas
Sandstone Rapids Marinette	High Hazard	42 ft	1925	Gravity	Wisconsin
Sandy Hook Fairfield	Low Hazard	35 ft	1905	Gravity	Connecticut
San Gabriel Los Angeles	High Hazard	320 ft	1937	Earth	California
San Joaquin No. 3 Forebay Madera	Low Hazard	40 ft	1906	Earth	California
Santa Felicia Ventura	High Hazard	213 ft	1955	Earth	California
Santee Berkeley	High Hazard	50 ft	1942	Earth	South Carolina
Santeetlah Graham	High Hazard	192 ft	1928	Arch	North Carolina
Sartell Benton	High Hazard	46 ft	1964	Gravity	Minnesota
Sawmill Coos	Low Hazard	15 ft	1965	Concrete	New Hampshire
Sawmill Spillway Nevada	Low Hazard	9 ft	1910	Buttress	California
Sawtelle Deadwater Penobscot	Low Hazard	8 ft	1880	Earth	Maine
Saxapahaw Alamance	Significant Hazard	26 ft	1938	Concrete	North Carolina
Saxon Gogebic	Low Hazard	37 ft	1911	Gravity	Wisconsin
Saxon Falls Gogebic	Low Hazard	35 ft	1912	Gravity	Michigan
Scanlon East Channel Dam Carlton	Significant Hazard	15 ft	1922	Gravity	Minnesota
Schaghticoke Rensselaer	Low Hazard	28 ft	1909	Concrete	New York
Schmeeckle Dawson	Low Hazard	59 ft	1941	Earth	Nebraska
Schoodic Lake Piscataquis	Low Hazard	11 ft	1929	Earth	Maine
Schoolfield Danville	Significant Hazard	33 ft	1904	Gravity	Virginia
School Street Albany	Low Hazard	16 ft	1865	Concrete	New York
Schuylerville Saratoga	High Hazard	43 ft	1919	Concrete	New York
Scopan Aroostook	High Hazard	35 ft	1928	Concrete	Maine
Scotland Windham	Low Hazard	37 ft	1909	Other	Connecticut
Scott Lake	High Hazard	134 ft	1921	Concrete	California
Scotts Flat Nevada	High Hazard	175 ft	1948	Earth	California
Seabright Knox	High Hazard	23 ft	1900	Concrete	Maine
Searsburg Bennington	Low Hazard	50 ft	1922	Other	Vermont
Sears Dam Rock Island	Low Hazard	16 ft	1912	Gravity	Illinois
Sebasticook Penobscot	Low Hazard	15 ft	1988	Concrete	Maine
Sebec Piscataquis	High Hazard	15 ft	1984	Timber Crib	Maine
Seboeis Lake Piscataquis	Low Hazard	11 ft	1925	Concrete	Maine
Seboomook Lake Somerset	High Hazard	60 ft	1936	Concrete	Maine
Second Connecticut Lake Dam Coos	Low Hazard	28 ft	1849	Earth	New Hampshire
Selis Ksanka Qlispe (Skq) Lake	High Hazard	200 ft	1938	Arch	Montana
Seminoe Carbon	High Hazard	295 ft	1938	Concrete	Wyoming